Fix test classes which use the wrong function to get iperf server IP. am: 22adf9d493 am: 8a7eaa8e02 Original change: https://android-review.googlesource.com/c/platform/tools/test/connectivity/+/3201010 Change-Id: Iaae0a1da9f369d42eed4d3cb995877105bd8350e Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>